Add support for the new user.logout.confirm route
>>> [!note] Migrated issue
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<!-- Migrated from issue #3514599. -->
Reported by: [dieterholvoet](https://www.drupal.org/user/3567222)
Related to !42
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Drupal 10.3.0 introduced a new logout confirmation page that's displayed when the logout route is visited without CSRF token (<a href="https://www.drupal.org/node/2822514">change record</a>). This route is now rendered using the frontend theme.</p>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Render this route in the same way as login/register routes.</p>
<h3 id="summary-ui-changes">User interface changes</h3>
<p><img src="https://www.drupal.org/files/issues/2025-03-21/CleanShot%202025-03-21%20at%2010.17.11%402x.png" alt="Screenshot"></p>
issue